I am 1000% sure. I just spend 8 weeks doing research and pricing out both 2019 and 2020 Niro EV EX Premiums in the DC Metro area. and I just signed a lease on a 2019 EX Premium last month. Front parking sonar is also unavailable at any price on the 2019 EX premium or 2020 EX premiums. The only U.S. car that got these items was the 2019 Launch Edition package, which curiously also deleted the ventilated seats.
When I spoke to 2 of the dealers, they said that Kia is not giving them a choice on how to order them. I think it's because the US market doesn't' really give a crap about EVs, so we get the cheap configuration (i.e. no front parking sonar or LED headlights). There must be a production constraint on getting those parts, since Kia would want them to be available in markets where that type of tech is necessary to be competitive, and where buyers you know...actually buy EVs.
Correct on the launch edition. Incorrect on the EX Premium. I have a 2019 EX Premium. $46k MSRP. It came with halogen headlights that I replaced with Auxito LED low beams. No Niro EV in the U.S. ever came with HIDs.